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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8r3y | ||||||||||||
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| タイトル | Cryo EM structure of a stable LGL/aPKC Iota/Par-6 complex | ||||||||||||
要素 |
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キーワード | CYTOSOLIC PROTEIN / Kinase / Polarity / Kinase substrate complex. | ||||||||||||
| 機能・相同性 | 機能・相同性情報Golgi cis cisterna / regulation of cellular localization / establishment of spindle orientation / diacylglycerol-dependent, calcium-independent serine/threonine kinase activity / Golgi vesicle budding / PAR polarity complex / Tight junction interactions / regulation of establishment or maintenance of cell polarity / cell-cell junction maintenance / protein kinase C ...Golgi cis cisterna / regulation of cellular localization / establishment of spindle orientation / diacylglycerol-dependent, calcium-independent serine/threonine kinase activity / Golgi vesicle budding / PAR polarity complex / Tight junction interactions / regulation of establishment or maintenance of cell polarity / cell-cell junction maintenance / protein kinase C / establishment of apical/basal cell polarity / diacylglycerol-dependent serine/threonine kinase activity / myosin II binding / regulation of Notch signaling pathway / negative regulation of glial cell apoptotic process / eye photoreceptor cell development / positive regulation of protein localization to centrosome / GTP-dependent protein binding / Schmidt-Lanterman incisure / establishment or maintenance of epithelial cell apical/basal polarity / Golgi to plasma membrane transport / membrane organization / cellular response to chemical stress / cell-cell junction organization / centrosome cycle / cortical actin cytoskeleton organization / protein targeting to membrane / tight junction / RHOV GTPase cycle / cortical actin cytoskeleton / positive regulation of Notch signaling pathway / establishment of cell polarity / establishment or maintenance of cell polarity / cell leading edge / exocytosis / RHOU GTPase cycle / brush border / CDC42 GTPase cycle / positive regulation of endothelial cell apoptotic process / positive regulation of glial cell proliferation / viral process / bicellular tight junction / regulation of postsynaptic membrane neurotransmitter receptor levels / intercellular bridge / vesicle-mediated transport / ruffle / RAC1 GTPase cycle / cytoskeleton organization / secretion / p75NTR recruits signalling complexes / axonogenesis / response to interleukin-1 / GTPase activator activity / actin filament organization / trans-Golgi network membrane / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / positive regulation of protein secretion / positive regulation of D-glucose import / protein localization to plasma membrane / Asymmetric localization of PCP proteins / positive regulation of protein localization to plasma membrane / adherens junction / positive regulation of NF-kappaB transcription factor activity / positive regulation of neuron projection development / phospholipid binding / small GTPase binding / Pre-NOTCH Transcription and Translation / centriolar satellite / Schaffer collateral - CA1 synapse / cellular response to insulin stimulus / KEAP1-NFE2L2 pathway / cell migration / microtubule cytoskeleton / protein-containing complex assembly / early endosome membrane / cell cortex / negative regulation of neuron apoptotic process / cytoskeleton / protein phosphorylation / protein kinase activity / endosome / intracellular signal transduction / cilium / apical plasma membrane / Golgi membrane / axon / cell division / protein serine kinase activity / intracellular membrane-bounded organelle / protein serine/threonine kinase activity / centrosome / protein kinase binding / negative regulation of apoptotic process / glutamatergic synapse / structural molecule activity / extracellular exosome / zinc ion binding / nucleoplasm / ATP binding / nucleus 類似検索 - 分子機能 | ||||||||||||
| 生物種 | Homo sapiens (ヒト) | ||||||||||||
| 手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.68 Å | ||||||||||||
データ登録者 | Earl, C.P. / Briggs, D.C. / McDonald, N.Q. | ||||||||||||
| 資金援助 | 英国, 3件
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引用 | ジャーナル: Nat Struct Mol Biol / 年: 2025タイトル: Capture, mutual inhibition and release mechanism for aPKC-Par6 and its multisite polarity substrate Lgl. 著者: Christopher P Earl / Mathias Cobbaut / André Barros-Carvalho / Marina E Ivanova / David C Briggs / Eurico Morais-de-Sá / Peter J Parker / Neil Q McDonald / ![]() 要旨: The mutually antagonistic relationship of atypical protein kinase C (aPKC) and partitioning-defective protein 6 (Par6) with the substrate lethal (2) giant larvae (Lgl) is essential for regulating ...The mutually antagonistic relationship of atypical protein kinase C (aPKC) and partitioning-defective protein 6 (Par6) with the substrate lethal (2) giant larvae (Lgl) is essential for regulating polarity across many cell types. Although aPKC-Par6 phosphorylates Lgl at three serine sites to exclude it from the apical domain, aPKC-Par6 and Lgl paradoxically form a stable kinase-substrate complex, with conflicting roles proposed for Par6. We report the structure of human aPKCι-Par6α bound to full-length Llgl1, captured through an aPKCι docking site and a Par6 contact. This complex traps a phospho-S663 Llgl1 intermediate bridging between aPKC and Par6, impeding phosphorylation progression. Thus, aPKCι is effectively inhibited by Llgl1 while Llgl1 is captured by aPKCι-Par6. Mutational disruption of the Lgl-aPKC interaction impedes complex assembly and Lgl phosphorylation, whereas disrupting the Lgl-Par6 contact promotes complex dissociation and Lgl phosphorylation. We demonstrate a Par6-regulated substrate capture-and-release model requiring binding by active Cdc42 and the apical partner Crumbs to drive complex disassembly. Our results suggest a mechanism for mutual regulation and spatial control of aPKC-Par6 and Lgl activities. | ||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8r3y.cif.gz | 453.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8r3y.ent.gz | 364.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8r3y.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/r3/8r3y ftp://data.pdbj.org/pub/pdb/validation_reports/r3/8r3y | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 18877MC ![]() 8r3xC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質 | 分子量: 39146.004 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PRKCI, DXS1179E / 細胞株 (発現宿主): HEK293 FreeStyle / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P41743, protein kinase C |
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| #2: タンパク質 | 分子量: 101889.805 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: LLGL1, DLG4, HUGL, HUGL1 / 細胞株 (発現宿主): HEK293 Freestyle / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q15334 |
| #3: タンパク質 | 分子量: 10856.517 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PARD6A, PAR6A / 細胞株 (発現宿主): HEK293 Freestyle / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q9NPB6 |
| #4: 化合物 | ChemComp-ANP / |
| 研究の焦点であるリガンドがあるか | N |
| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: aPKCiota-Par6-Llgl1 complex / タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT | ||||||||||||||||
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| 分子量 | 値: 0.22 MDa / 実験値: NO | ||||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK293 Freestyle | ||||||||||||||||
| 緩衝液 | pH: 7.5 | ||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 0.4 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Sample was double affinity purified and gel filtered. Sample was monodisperse. | ||||||||||||||||
| 試料支持 | 詳細: 45mA / グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 298 K 詳細: 4 ul of aPKCiota-Par6-Llgl1 complex at a concentration of 0.4 mg/ml was applied to R1.2/1.3 Quantifoil 300 mesh copper grids which had been glow-discharged for 45 s at 45 mA . Grids were ...詳細: 4 ul of aPKCiota-Par6-Llgl1 complex at a concentration of 0.4 mg/ml was applied to R1.2/1.3 Quantifoil 300 mesh copper grids which had been glow-discharged for 45 s at 45 mA . Grids were blotted for 2.5 s at 100% humidity using an FEI Vitrobot MK IV. |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1200 nm |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 平均露光時間: 8 sec. / 電子線照射量: 48.1 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 実像数: 4002 |
| 電子光学装置 | エネルギーフィルター名称: GIF Quantum ER |
| 画像スキャン | 動画フレーム数/画像: 40 |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING ONLY | ||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 1069057 詳細: Semi-automated picking with Xmipp3 and particle extraction in Relion-3 yielded 47,516 particles from 1000 micrographs 38. After reference-free 2D classification in Relion-3, eight 2D classes ...詳細: Semi-automated picking with Xmipp3 and particle extraction in Relion-3 yielded 47,516 particles from 1000 micrographs 38. After reference-free 2D classification in Relion-3, eight 2D classes were selected and used as templates for reference-based particle picking in Gautomatch. A total of particles were extracted with 2-fold binning and submitted to 8 rounds of 2D classification in Relion-3. | ||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.68 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 121194 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL 詳細: Initial fitting was done in Chimera. Interactive Model building was done in COOT & Isolde Refinement was done using Phenix. | ||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
英国, 3件
引用


PDBj
























gel filtration



